/*
 * Wire
 * Copyright (C) 2018 Wire Swiss GmbH
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see http://www.gnu.org/licenses/.
 *
 */

import {SWITCH_LANGUAGE} from '../action/creator/LanguageActionCreator';
import {DEFAULT_LANGUAGE, SUPPORTED_LANGUAGE, currentLanguage} from '../../localeConfig';

const defaultState = {
  language: SUPPORTED_LANGUAGE.includes(currentLanguage()) ? currentLanguage() : DEFAULT_LANGUAGE,
};

export default function reducer(state = defaultState, action) {
  switch (action.type) {
    case SWITCH_LANGUAGE:
      return {
        language: SUPPORTED_LANGUAGE.includes(action.payload) ? action.payload : state.language,
      };
    default:
      return state;
  }
}
